Edwaed weston



i (No Model.)

B. WESTON.

INCANDESGEN'l LAMP HOLDER. No. 320,029. Patented June 16, 1885.

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is closed by a wooden plug to UNITED STATES EDIVARD \VESTON, OF NEWARK, NEIV JERSEY,

STATES ELECTRIC LIGHTING COMPANY,

PATENT OFFICE.

on NEW YORK, N. Y.

lNCANDESCENT-LAMP HOLDER.

SPECIFICATION forming part of Letters Patent No. 320,029, dated June 16, 1385- Application filed July 18, 1584. (No model.)

To all whom it may concern.-

Be it known that I, EDWARD Wnsron, a subject of the Queen of Great Britain, and a resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Incandescent-Lamp Holders, of which the following is a specification, reference being had to the drawings accompanying and forming a part of the same.

In another application filed by me I have shown and described a socket for incandescent lamps, consisting of a metal cylinder containing spring-contact terminals and having ahead or flange at its upper end. In conjunction with this I use an incandescent lamp on the neck of which is secured a metal cylinder, from the sides of which project lugs or pins, and which which the lamp terminals are secured. The flanged rim of the socket is cut away to permit this cylinder to be inserted and turned to bring the pins under the flange,which locks the cylinder against the upward pressure of the spring terminals and thus holds the lamp in position.

The subject of my present invention is a holder in which the general features of construction above described are present. It involves, however, a different means of securing the lamp in the socket, and in many respects is an improvement over the plan of locking the lamp by means of the flange or head and pins.

I will describe the invention by reference to the accompanying drawings, in which- Figure 1 is a view in elevation and part section of a lamp and socket combined and embodying my improvements, and Fig. 2 is a horizontal section on line w x of Fig. 1.

Around the base or cylindrical neck of a lamp-globe, A, I secure a sheet-metal cylinder, E, which is fixed to the glass by a small quantity of a suitable cement-such as plaster-of-paris. The cylinderE may be quite thin, and as only a small quantity of plaster is required to unite it to the neck, the diameter of the latter will be but slightly increased by its presence. The end of the cylinder E is closed by a plug of insulating material, B, having a central post or projecting portion, 0. The

wires from the lamp pass through this plug and are soldered to an annular plate, a, and a small circular plate, I), the latter being secured to the end of the post Cand the other set around it. Around the cylinder E, above the plug, is formed a groove or depression, D, by indenting the side of the cylinder. The socket F is made of sheet metal, generally brass, and is ASSIGNOR TO THE UNITED secured to a base provided with means for attaching it to a bracket or chandelier. In the lower portion of the socket is the switchcontrolled by the key serted a perforated block or plate, H, of insulating material. To the under side of block H is secured a terminal spring-plate, L, that normally covers the perforation. To the upper side is secured an arc-shaped terminal spring, M, that partly surrounds the perforation. To the exterior surface of the sheetmetal socket are fixed spring-latches N, that project through into the interior, small holes being formed in the metal, as shown.

To fix the lamp in the socket the cylinder E is inserted therein until the latches N enter the circular depression D. The post 0 will then extend through the perforation in plate H, and plates (1- and b will be in contact with springs M and L, respectively. In this way the lamp is held in position and good electrical contact maintained between its terminals and those of the socket, to which latter the line wires are connected.

Ordinary jarring or movement will not displace the lamp, but by the application of alittle force it may be drawn out.

This form of holder is neat in appearance, compact, and very cheaply made. In these and in the other respects mentioned it possesses many advantages over any other of which I am aware. In a patent granted to me May 6, 1884, Serial No. 298,143, I have shown a lamp-holder in which the same principles of construction are present as in this device. In the patent referred to, however, the lamp-base is composed of an insulating-cup that is secured to the neck of the globe, and the spring catches are set inside the socket. This inven-- tion is an improvement on that construction.

I claim- 1. The combination, with an incandescent G, and above this is in-.

electric lamp-globe having a cylindrical neck, a sheet-metal cylinder in which a circular groove or depression is formed, secured to the neck, a plug of insulating material closing the end of said cylinder, and contact terminals secured thereto, of a socket into which the said cylinder fits, spring-catches secured to them:- terior of the socket and extending through the sides of the same for entering the circular groove or depression and holding the lamp in position.

2. The combination, with the lamp having a cylindrical neck, the sheet-metal cylinder E, around which is formed agroove or deprcsadapted to enter the groove D and hold the sion, D, secured to the neck, a plug ofginsulat- Is iug material closing the end of the cylinder, and contact terminals secured thereto, of a. socket for receiving the cylinder, contact terminals secured thereto, and spring-latches N, fixed to and projecting into the socket and lamp in position, as set forth.

In testimony whereof I have hereunto set my hand this 16th day of July, 1884.

- EDWARD WESTON. Vitnesses: .i

FRANK N. CRANE, O. F. GREIM. 

